/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/ViewModels/HierarchyEditor/NiagaraSummaryViewViewModel.h
[TOptional](API\Runtime\Core\IO\TOptional)< [FNiagaraStackGraphUtilities::FMatchingFunctionInputData](API\Plugins\NiagaraEditor\ViewModels\Stack\FMatchingFunctionInputData) > GetInputData() const